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Provides a framework for rule based text scanning
and uses the framework to provide rule-driven default implementations of
<code>IPresentationDamager</code>, <code>IPresentationRepairer</code> and <code>IDocumentPartitioner</code>.
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Package Specification</h2>
<code>RuleBasedScanner</code> is a document-based scanner controlled by <code>IRule</code>
objects. When evaluated an <code>IRule</code> always returns an <code>IToken</code>.
The package provides a set of rules whereby <code>PatternRule</code> is the
most important one. <code>PatternRule</code> defines a pattern-configurable
rule.
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